2743145 has 4 divisors (see below), whose sum is σ = 3291780. Its totient is φ = 2194512.

The previous prime is 2743133. The next prime is 2743177. The reversal of 2743145 is 5413472.

2743145 = T₁₀₄₅ + T₁₀₄₆ + ... + T₁₀₄₉.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 444889 + 2298256 = 667^2 + 1516^2 .

It is a cyclic number.

It is not a de Polignac number, because 2743145 - 2⁴ = 2743129 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274310 + ... + 274319.

It is an arithmetic number, because the mean of its divisors is an integer number (822945).

2^2743145 is an apocalyptic number.

It is an amenable number.

2743145 is a deficient number, since it is larger than the sum of its proper divisors (548635).

2743145 is an equidigital number, since it uses as much as digits as its factorization.

2743145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548634.

The product of its digits is 3360, while the sum is 26.

The square root of 2743145 is about 1656.2442452730. The cubic root of 2743145 is about 139.9854576732.

The spelling of 2743145 in words is "two million, seven hundred forty-three thousand, one hundred forty-five".